LightSkin: real-time global illumination for virtual and mixed reality

  • Authors:
  • P. Lensing;W. Broll

  • Affiliations:
  • Ilmenau University of Technology, Germany;Ilmenau University of Technology, Germany

  • Venue:
  • JVRC '13 Proceedings of the 5th Joint Virtual Reality Conference
  • Year:
  • 2013

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Abstract

Synthesizing global illumination effects is a vast field of research for both offline and real-time rendering. While the most important goals for offline rendering are realism and physical correctness, real-time rendering approaches additionally need to be sufficiently fast. In this paper we present a fast and novel global illumination approach capable to realize indirect illumination for diffuse and glossy surfaces based on thousands of virtual area lights even for dynamic scenes. To achieve real-time performance we calculate indirect light influence only on sparse scene points in model-space and interpolate the results for the entire visible scene. A novel shading technique is proposed to support high-frequency indirect lighting effects such as view-dependent glossy reflections without introducing temporal incoherence in dynamic scenes. Since our approach does not require any pre-computation it may be applied to Mixed Reality applications improving the visual integration of virtual content.